<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi!<div><br></div><div>Setting the ulimit works nicely with files, but not so nice with sockets.</div><div>You wont notice until the driver start using driver_select and thereby, indirectly, using</div><div>the system call select. </div><div>I suspected that "erl +K true", enable kernel poll (kqueue for max os x), should do the trick. But, not.</div><div>There is still a check for max_fds that triggers somewhere which is unfortunate.</div><div><br></div><div>This is on R15, have not checked R16 yet.</div><div><br></div><div>Rickard Green may now more about the status on max_fds ?</div><div><br></div><div>Regards</div><div><br></div><div>/Tony</div><div><br></div><div><br><div><div>On 13 jul 2013, at 15:04, goofansu <<a href="mailto:goofan.su@gmail.com">goofan.su@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
<div style="font-family: Helvetica; font-size: 13px; ">Hi, Anthony<div><br></div><div>Thank you for the explanation.</div><div><br></div><div>I tested on the VPS again and set `ulimit -n` to a number like 4096 takes effects.</div><div><br></div><div>I'm running Riak so cannot upgrade to R16B01 now.</div><div><br></div><div><br></div><div>Kind Regards,</div><div><br></div><div>--</div><div>goofansu</div><div><br></div></div>
<div><div><br></div><div>-- </div><div>Kind Regards</div><div>goofansu</div><div><br></div></div><p style="color: #A0A0A8;">在 2013年7月13日星期六，下午8:08，Anthony Ramine 写道：</p>
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<span><div>Hello,</div><div><br></div><div>ERL_MAX_PORTS sets the maximum number of running ports. Not the maximum number of file descriptors.</div><div><br></div><div>I guess you are running OS X which has a broken poll implementation and Erlang is forced to use select(), which is limited to FD_SETSIZE file descriptors. Fortunately, OS X's select() implementation can also be made to support an infinite number of file descriptors through a macro which I taught Erlang/OTP to use. Upgrade to R16B01 and you should be fine.</div><div><br></div><div>Regards, </div><div><br></div><div>-- </div><div>Anthony Ramine</div><div><br></div><div>Le 13 juil. 2013 à 08:34, goofansu a écrit :</div><div><br></div><blockquote type="cite"><div>I encounted "fd=1024 is larger than the largest allowed fd=1023", then I set the ERL_MAX_PORTS variable when start the erlang vm. But it takes no effect.</div><div><br></div><div>$ erl -env ERL_MAX_PORTS 4096</div><div><br></div><div>Erlang R15B01 (erts-5.9.1) [source] [64-bit] [smp:4:4] [async-threads:0] [kernel-poll:false]</div><div><br></div><div>Eshell V5.9.1 (abort with ^G)</div><div>1> erlang:system_info(check_io).</div><div>[{name,erts_poll},</div><div> {primary,select},</div><div> {fallback,false},</div><div> {kernel_poll,false},</div><div> {memory_size,6344},</div><div> {total_poll_set_size,2},</div><div> {lazy_updates,true},</div><div> {pending_updates,0},</div><div> {batch_updates,false},</div><div> {concurrent_updates,false},</div><div> {max_fds,1024}]</div><div>2></div><div><br></div><div>The max_fds is always 1024.</div><div><br></div><div>-- </div><div>Kind Regards</div><div>goofansu</div><div><br></div><div>_______________________________________________</div><div>erlang-questions mailing list</div><div><a href="mailto:erlang-questions@erlang.org">erlang-questions@erlang.org</a></div><div><a href="http://erlang.org/mailman/listinfo/erlang-questions">http://erlang.org/mailman/listinfo/erlang-questions</a></div></blockquote></span>
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